Free Body Fat Percentage Calculator Online
Estimate body fat percentage using Navy Method (waist, hip, neck measurements) and BMI method. Get lean mass vs fat mass breakdown with health category classification. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Select Gender
Choose male or female (formulas differ by gender).
Enter Measurements
Input neck circumference, waist (at navel), and hip circumference (women only) in cm or inches.
Enter Height
Input your height for accurate body fat calculation.
View Body Composition
See body fat %, lean mass, fat mass in kg/lbs, and fitness category.
Frequently Asked Questions
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